Heating apparatus



1,701,716 C. S. BROWN HEATING APPARATUs Filed Dec. 13, 1924 2 sheets-sneer l `Feb. l2, 1929.

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ATTKORNE Feb. 12, 1929.

c. s. BVRowN HEATING APPARATUS 2 Sheets-Sheet 2 Filed Dec. 1s, 1924 Patented Feb. 12, 1929.

UNITED vS'IATES y 11,101,716 PATENT oFFIcE.

CHARLES S. BROW'N,` OF NASHVILLE, TENNESSEE; CHARLESlll-I? SIMPSON, EXECUTOR 0F SAID BROWN, DECEASED,-ASSIGNOR TO CHARLES H. SIMPSON, DAN E. MCGUGIN, y

AND CHARLES C. TRABUE, TRUSTEES, OF NASHVILLE, TENNESSEE.

i HEATING APPARATUS. l

Y Application filed December. 13, i924; semina. 755,639.

Myy invention consists of an improved apparatus for heating by means of steam.

The object of my invention is to provide an apparatus by means of which the radiator or heater may be heated to anyzdesired temperature between that of the air and that of the steam and by which the temperature within the radiatorpcan be very quicklyraised to that of the steam at full pressure when it becomes, desirable to do so. Y

By means of my improved apparatus, the steam is so supplied tothe radiator that the steam and air are mixed so as to form a humid mixture in which the heatingmedium is the lsteam or vapor carried by theair and in which the mixture is maintained ythroughout the radiator- The apparatus is so construct-ed that some of thesteamis introduced in the itorm of a jet so ask to'cause a rapid andcontinuous circulation of the humid mixture in the radiator, and a, supplementaryl supply of steam can be introduced when needed around or in contact with thepj et. As istwell known, steam alone at atmospheric pressure` has a temperature of 212 and cannot have ya lower temperature without being under a lower pressure. But it is a well-known `fact that steam can exist mixed with air at lower temperatures than its `boiling point at atmospheric pressure, the amount of steam or water l vapor carried being very smallgwithlower temperatures of the lair but increasing as the temperature of the air increases. I take advantage of this Jfact inmy invention and am able to form a mixtureof air and steam at any pressure desired. Byk introducing some ofy the steam in the `iorm of a jet at highvelocity, the mixturefof air and steam is produced in the radiator and is ymaintained therein, andw this mixture is. causedto circulate rapidly and` continuously as a resultof which uniformityl of temperature is maintained. The apparatus is provided with asecond supply opening arranged near or around the jetlby means of which when the teniperaure of the.r radiator :falls below the desired point or for any reason itis desired to heat the radiator very quickly, a supplementary supply of steam-may be .in-1 .troduced around or in contact with thejet.`

The velocity of the j et can be increased increasing the pressure oi" the steam supplied. to

it. B introducing the supplementary ksupply or steam around .the jet, thissteainis activ-eig? and rapidlyulrculated inthe radius lparts of theradiator to produce Steam itself at normal prassure.` f

` tor together with the'steamwhichiiows from the jet itself. y

The apparatusis also provided with a pipe or passage extending from-some part of the radiator to a point adjacent to the jet by meansof which a current of air or humid mixture may be caused to flowfrom vthe radiator tothe point of introduction'of the steam and to be mixed With t-he intlowing steam at that point. y

The accompanying kdrawings illustrate various forms 'or embodiments of my improved apparatus. I do not 'confine myself` to the exactjdetailsshown as these may be modified materially without departure from the kfundamental principles of myv invention. n y

Fig. 1 is a central vertical section of a valve embodying one form of ymy improved apparatus. In this figure, the valve is shown as closed.

Fig. 2 shows asection ofthe inner part of the valve connectionwith the valve proper vpromoting ycirculation andthe mixing of air with the steam in certain'types of radiators.

Fig. 6 shows -afmethod of connecting the y positive cir-` culation-,through thesame.` ,f n

Fig. Z rdisclosesfa radiator-equipped with the valve shown in Figl2.y I y n Inl F igure- 1 I have shown one form of admissiony valve embodying my inventio'n.l It is constructed with two openings or passa ges. The central one isin` the form of a j et. The other passage surroundsthe jet and is adapted to admit asupplementary supply of steam when the valve is 'fully opened.v `When` the y valve*l is only partly opened, the steam is caused to flow-into the radiator in the form of a jet of high velocity which produces a humid mixture of steam and air within the radiator and a continuous circulation of this mixture therein. This mixture maybe'mainytained in the radiator atany desired temperattire between that of the air and of the n p y e Thisqisaceamplsuea by regulating 'When it desired to raise the tempera-ture quickly or to the full temperature of the steam itself, the valve is fully opened and a supplmentary supply of steam is admitted through the second opening and around the jet.

rlhe valve consists of a body 1,l With steam inlet 2, and a spud 3 for connection with the valve to the radi ator by means of a union nut Il. The body contains a valve 5 proper which may be fitted with the usual composition disc Gffor effecting closure of the valve on the valve seat 7. The valve 5 is actuated by the valve stem 8, preferably suppliedwith a multiple threaded screw 9 acting in the nut 10 for securing quick and full opening of the valve with a partial turn of the screw. The valve stem 8 extends through the usual stufling box 12 and to the outer end of the stem is attached a cap 13 enclosing the nut and stuffing box. To this cap is attached the handle 111 for the actuation of the valve. In this form of valve a threequart turn of the handle throws the valve from fully opento fully closed position or vice versa. The valve stem 8 extends through the valve 5 into the passage 15 leading to the radiator` and the stem may be extended into the radiator itself as far as may be desired, as indicated by dotted lines 16, but Il prefer to confine it Within the limits of the valve body itself, as shown in full lines. y v

The extension of the valve stem8 contains a passage 17, with Which one or more transyverse openings connect. The passage 17 is made long enough and of such a small diameter as to cause the steam to be projected into the radiator in the form of a jet. Ihave found that this result will be effectively se cured by making the passage 17%t-hs of an inch long and lgths of an inch in diameter-` 18 are the transverse openings connected with the passage 17. `|lflie valve stem extension is threaded 'to receive a conical sleeve 19 which has a cylindrical extension 20 accurately titting the bore of passage 15 so as to be approximately steam-tight. The cylindricalexten1 sion 20 contains a chamber 21 into which one or more preferably rectangular ports 22 open, as is more clearly shown in Figures 2 and 8.

If the valve is partly opened, as shown in Figure 2, the cylindrical portion 20 of sleeve 19 will bepartly Withdrawn from passage 1b, exposing a portion of theportor ports 22 so that steam will pass through the ports 22 into the chamber 21,- then through the ports 18 into the passafe 17, from which it Will be discharged into the radiator at high velocity in thev form of a jettending toA circulate the steam and the air in the radiatorfand to mix the tivo together to form a saturated humid mixture, and thus heating the `air. amount of steam suppliedis varied by opening and closing the valve so as to expose las much or as little of the ,port or ports 22 to The momie The introduction of the steam in the ator so that their mixture is maintained, and

the steam is prevented from accumulating in one part of the radiator and the air in another.

If it is desired to fill the radiator quickly or to use steam at full pressure orat a pressure that cannot be secured by the jet alone, as in very cold Weather, the valve may be fully opened or may be opened as shown in Figure 3, and is so designed as to furnish fully half thev area of the passage 15 in elfective opening. The effect of this is to cause a supplemental supply of steam to be fed rinto the radiator through the passager 15 and around the jet which flows through the passage 17.

. While the jet and its controlling apparatus, as above described, serve to mix and to circulate the heating medium Within the ra-` diator with good effect, Ihave found it pos# sible to increase its effectiveness and to produce, thereby, a substantially uniform temperature throughout the radiator, by placing a Venturi tube ordiffuser 25 (Figure 2) in the path of the steam jet. This Venturi tube is suitably supported Within the spud 3 so as to form an annular passage 26 around the difuser and bet-Weenit and the spud.

In this arrangement, the inductive effect of the steam jet draws steam from the passage 15,carrying it with the steam of the j et through vvthediffuser 25 and forming a partial vacnumin the passage 15 which causesr a current of air to flow from the radiator through the annular passage 2G around the diuser, from which it is drawn into the Venturi tube by the jet of steam and thus a continuous circulation of the mixture is maintained from the radiator through the passage 26 and through the Venturi tube back into the radiator.

In Figure t Iy have shown a form of valve yin which Lthe diffuser is extended to any desired point Within the radiator, or entirely across the radiator. In this construction the diffuser is preferably provided with openings 27 so spaced as to discharge the flowing mixture at desired points, or the diffuser may be yenclosed by a tube 28, as shown, with similar openings 27'r11 to permit the discharge of the mixture into the radiator. In such construction I provide the tube 28 with openings 29 opening into the passage 26. as shown, for the admission of air or the humid'mixture from the radiator into the passage 2G and so into the passage 15. If the tube 28 is used, the diffuser is not extended. 4

In Figure 5I have shown another 'term of fitting for the attachment of the "valve,

Ii tl Where it may be desirable to draw the air supply for the ditluser from a distant point. For

this purpose the vacuum chamber 30 is formed. around the diiuser, and an air tube 3l leads to any point iii the radiator itroin which it is desired to draw the air or the mixture. A tube 82 may also be connected with the chainber 8O by means ot Which another connection may be formed With another part ot the radiator. @ne or both ot' these tubes may be used. ln Figure 5, 30a is litting adapted to screw into the radiator, provided with a Wall 30h through which the Venturi tube and the tube 3l extend, and. which 'toiiiis the facnum chamber 30 already referred to. l

ln Figure 7 l have shown another 'torni ol' radiator which is iii the 'torni ot a continuous coil. having an inlet valve 52:3, such as shown in to the discharge end o't the coil, by means otl which a continuons circulation Y ot humid mixture is maintained throughout the coil. In this case the tube 3l is omitted. 5d represents any suitable torni ot discharge valve.

Having` described my invention, What l claim as new and desire to secure by Letters Patent is:

l. ln a heating system for heating with steam, the combination oit a radiator and an inlet valve provided With two passages, one ot which is ot such dimensions as to cause the heating' Vtlnid to flow into `the radiator in the form ot' a jet and the other otwl: ich is a rranged to admit a supplemental supply et steam in Contact with the jet.

2. In a heating system tor heating with steam, the combination of a radiator and an inlet valve provided with two passages, oneV oi"- which is ot suoli dimensions as to cause the heating fluid to tloiv into the radiator in the ito'rm of a jet and the other oit which is arranged to admit an additional supply ot steam around the jet, andincaiis for controlling these passages.

3. In a heating system tor heating With steam, the combination ot' a radiator, and an inlet valve provided with two passages, the first of which is centrally located in the valve and is of such dimensions as to cause the heating tluid to iioW into the radiator in the torni l inlet valve provided with a central passage vot such dimensions as to cause the heating iiuid to flow into the radiator in the form of a )et and provided with a second passage arranged to introduce a supplemental supplyv of steam in Contact with the et and a Venturi. tube arranged in trontot` the jet opening and surrounded by a passage leading from the radiator to the jet.

5. In a heating system 'tor heating with steam, the combination of a radiator and an inlet valve provided With a body having ay steam inlet, a stein, a valve proper carried by the stein, a valve seat, an extension oft they stein projecting beyond the valve proper and having a passage of suoli dimensions as to cause thev heating fluid to flow through the same in the form of a et, a sleeve surrounding the stein and forming a chamber between the sleeve andthe valve, the stein being provided with ports connecting the chamber and the passage in the stein, and a cylindrical eXtention connected with the sleeve and accurately c iitting the passage in the valve body provided with ports leading into said chamber, the

cylindrical extension oit the sleeve being so arranged that it can be Withdrawn entirely from the passage inthe valve body so as to admit a supplemental supply of steam around the et.

Iiitestin'iony Whereo't, I have signed iny naine to this specification.'

CHARLES S. BROWN. 

